* move from contrib to projects

Numeric/simpleFunction.h

Solver/dofManager.h

Solver/functionSpace.h

Solver/solverAlgorithms.h

Solver/terms.h

contrib/arc/CMakeLists.txt

contrib/arc/Classes/FuncGradDisc.h

contrib/arc/Classes/FuncHeaviside.h

contrib/arc/Classes/ImageSolver.cpp

contrib/arc/Classes/ImageSolver.h

contrib/arc/Classes/NodeEnrichedFS.cpp

contrib/arc/Classes/NodeEnrichedFS.h

contrib/arc/Classes/OctreeLSImage.cpp

contrib/arc/Classes/OctreeLSImage.h

contrib/arc/Classes/OctreeSolver.cpp

contrib/arc/Classes/OctreeSolver.h

contrib/arc/Classes/QuadtreeLSImage.cpp

contrib/arc/Classes/QuadtreeLSImage.h

contrib/arc/Classes/VectorXFEMFS.cpp

contrib/arc/Classes/VectorXFEMFS.h